Operating instructions

32 YP4-6-825A3P Table of Contents Index Great Plains Manufacturing, Inc.

401-652M Table of Contents Index 2015-01-26

Air-Pro

Meter Operation

Refer to Figure 26

The meter disk is driven, top forward, by a chain drive

(not shown) always connected to the section drive shaft.

At non-planting rows, use a blank disk (page 59).

Seed is air-delivered to the inlet above the air release

screen . Seed customarily ﬁlls to the top of the screen,

blocking further air ﬂow from the seed delivery system,

until the seed level falls below the screen.

Seed enters the meter at the seed inlet shutter (if

open), and forms a seed pool at the base of the meter.

Seed pool size is controlled by the shutter handle

setting (which is the only user adjustment at the meter).

Initial shutter settings are given in the seed rate charts.

Meter pressurization air enters the meter at , and exits

the meter primarily at the seed pockets in the seed disk.

The pressure differential holds seed in the disk

pockets rising from the seed pool. Excess seed at a

pocket is picked off by the tickler brushes .

The strip and drop brushes block meter pressurization

air. Seeds passing the drop brush are free to fall into

the seed tube, and are detected by the seed sensor .

Meter Operation

1. Install disks for your crop/population range per the

Seed and Fertilizer Rate manual and the instructions

beginning on page 57 of this manual.

2. Open the shutter at planting rows to the

recommended initial setting (from the Seed Rate

charts). At unused rows, install a blank disk

(page 59) and close shutter.

3. Set sprocket indexing if staggering a twin-row crop

(see Seed and Fertilizer Rate manual for details).

4. Operate fan to achieve suggested manifold pressure

(Seed and Fertilizer Rate manual, and page 43).

5. Open slide gates to ﬁll meters (page 24).

6. With all rows primed, rotate meters one turn to ﬁll

pockets to edge of drop brush. Rotate the drive shaft

(top forward) with a

⁄

inch (23 mm) wrench, or raise

and rotate ground drive wheel (top forward).

7. Leave fan running (to keep seed in top pockets).

Re-install rain covers. Commence planting.

Meter operation is automatic from this point on.